Bob Godfrey, the so-called Godfather of British animation, died has died at 91, BBC News reports.

No cause of death was disclosed.

Godfrey was nominated for four Oscars for his animated shorts over the course of his career, winning one in 1975 for "Great," a 25-minute, humorous animated film about the life of civil engineer Isambard Kingdom Brunel. He was the first British animator to receive an Oscar.

He is best known, however, for his work on a series of beloved children's TV cartoons such as "Roobarb "(1974), which explored a rivalry between a green dog and a pink cat; "Noah and Nelly in… SkylArk" (1977), an imaginative re-telling of the story of Noah's ark; and "Henry's Cat"(1980), which centered on a day-dreaming kitty.

Godfrey also explored more adult fare, such as his short film version of the sex-tip book, "Kama Sutra Rides Again" (1971). That film found an admirer in Stanley Kubrick, who screened it alongside U.K. showings of "A Clockwork Orange."

In addition to his work with Kubrick, Godfrey collaborated on another piece of pop culture history, serving as an advisor on The Beatles' animated film, "Yellow Submarine"(1968).

In a 2001 interview with the Guardian, Godfrey confessed to having one professional regret.

"I'd love to have done a full-length feature but I can't seem to stretch myself to that length," Godfrey said. "When you look at my films, they appear to be a series of 30-second commercials cut together. I'm a short distance man whether I like it or not."